Drugs Allergy Basics: Symptoms, Diagnosis, & Treatments

Drugs Allergy
Written by allergiesinfo


        Many people can use the term “Drugs Allergy” or “Medicine Allergy “. The most of reactions caused by medications are more correctly termed “unfavorable reactions to drugs.” It is an allergic reaction to a medication. When you have an allergic reaction, your body’s immune system, which fights against infection and disease, reacts to the drug. It is an unusual response of the body’s immune system to a normally harmless material. As a result of this reaction, the symptoms of fever, trouble breathing, and rash maybe occur. 

What drugs cause the most drug allergies?

         True drug allergies happen few and far, and it is caused by the immune system. Less than 10 percent of the negative drug reactions are due to an allergy to the medication. The other is the side effects of the drugs. However, it is very important to know if you have a drug allergy or not, in the order to be able to defeat and control them.  Some medications produce a more allergic reaction in a body than others. The most common are given below:

  • . Antibiotics, e.g. Pancilin
  • . Non-steroidal anti-inflammatory medications and Aspirin,  e.g. ibuprofen
  • . Anticonvulsants
  • . Chemotherapy drugs such as docetaxel, paclitaxel
  • . Monoclonal antibody therapy

         When you take the medication regularly, or when it is massaged on the skin, or when it is given by injection, rather than taken to the mouth, then, The possibility of developing an allergy is higher.

Symptoms of Drugs Allergy

         Only a few percentages of people are victims of true drugs allergy. Some drug allergy symptoms start after hours, days, or weeks after you take the drug, and some start after right you take them. Some common symptoms that occur during the drugs allergy are:  

  • . Wheezing (a whistling  sound when you breathe)
  • . Nausea
  • . Mouth, face, lips, and throat swelling
  • . Itchy skin
  • . Diarrhea
  • . Vomiting
  • . Shortness of Breath
  • . Rash
  • . Hives – itchy on the skin
  • . Fall in blood pressure

         A severe drug allergy can cause Anaphylaxis. It ​can be life-threatening. A sudden life-threatening, whole-body reaction to a drug or other allergen is called Anaphylaxis. It can be deadly or harmful if it is not treated right away.            

Urticarial rash from Drugs Allergy.


         For drugs allergy, correct identification is necessary. A person may be reported as a victim of drugs allergy that has never been confirmed, with the help of overdiagnosis. Misidentify drugs allergy may result in the use of more expensive, or less appropriate drugs.

          Your doctor will ask you questions and perform a physical test. He will ask about the start of symptoms, the time when you took drugs. He may order some additional tests or refer you to an allergist for tests. An allergist may perform a skin test and blood test.


         The treatment of drugs allergy depends on their severity. If you have a severe allergic reaction to a drug, you need to avoid the drug entirely. Your physician will probably try to replace the drug with another one you are not allergic to.

          Depending on the severity of the allergy your doctor may suggest that you stop taking the drug and this will be enough to remove the symptoms of allergy. Certain medications can help to remove or reduce the symptoms of the allergy such as Antihistamine, Corticosteroids, and Bronchodilators, etc.

           An Antihistamine blocks the production of histamine and helps to stop symptoms such as swelling, irritation, or itching.

            Corticosteroids can help to reduce the inflammations or swelling of your airways and other serious symptoms.

             Bronchodilators are the type of medication and help you breathe easier and open your airways. If your drugs allergy triggers coughing or wheezing, your physician will recommend this medication.

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